212021111212122 has 64 divisors (see below), whose sum is σ = 453327655772160. Its totient is φ = 65960709393600.

The previous prime is 212021111212021. The next prime is 212021111212159. The reversal of 212021111212122 is 221212111120212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17494654 + ... + 27020457.

It is an arithmetic number, because the mean of its divisors is an integer number (7083244621440).

Almost surely, 2^{212021111212122} is an apocalyptic number.

212021111212122 is an abundant number, since it is smaller than the sum of its proper divisors (241306544560038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212021111212122 is a wasteful number, since it uses less digits than its factorization.

212021111212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44516059.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212021111212122 its reverse (221212111120212), we get a palindrome (433233222332334).

The spelling of 212021111212122 in words is "two hundred twelve trillion, twenty-one billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".